Male fawns exhibit rudimentary antler growth, resulting in small knobs known as “buttons.” Noticeable antler growth, usually two or more antler points, occurs on second year or yearling bucks. Antler development is largely dependent on adequate nutrition. Older deer generally have heavier, better-developed racks than younger animals if nutrition is comparable.
Bucks shed their antlers each year unless there is injury or physiological stress. Shedding typically begins in late December and peaks in mid-February, with few antlered deer seen by early March. Once shedding is complete, new growth immediately begins, with mature antlers present in 3-4 months. During summer, antlers are soft, engorged with blood, and covered with a hair-like membrane called “velvet.” Antlers become solid and hard in late summer or early fall when annual growth is completed. The “velvet” is sloughed or rubbed off on shrubs and trees.